Improvement in knitting-machines



UNITED STATES PATENT OEEIcE.

DANIEL KIDDER, OF FRANKLIN, NEV HAMPSHIRE.

IMPROVEMENT IN KNlTTING-MACHINES.

Specification forming part of Letters Patent No. 83,390, dated October27, 1868.

To all whom it may concern.'

Be it known that I, DANIEL KIDDER, ot' Franklin, in the county ofMerrimack and State of New Hampshire, have invented a certain new and`useful Improvement in Knittin g-Machines, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, which make part of this specification, and inwhich- Figure l represents a View, partly in plan and partly inhorizontal section, at the line :v w of Fig. 2, of a rotaryknitting-machine havingmy improvement applied; Fig. 2, a side elevationof the same; and Fig. 3, a-view in elevation, and on an enlarged scale,of one of the needles detached.

The object of my invention is to provide a convenient means of attachingthe elevating and depressing cams which actuate the needles, and theyarn-feed which supplies the yarn thereto; to which end my improvementconsists in the provision of a detachable stock, of suitable form, towhich said parts are secured, by which means the construction of themachine is simplified and the cams rendered readily removable, whendesired, for purposes of renewal or repair. Y

' In the accompanying drawings, which show a convenient arrangement ofparts for carrying out the objects of my invention, A represents the bedor frame of the machine, to which ahollow stationary needle-cylinder, B,is firmly secured.

rllhe machine can be fastened upon a frame or table by means of theset-screw a, working in a boss, A', which forms part of the bed, or itcan be attached to a post or bearing by other suitable means.

A series of vertical grooves, b b, is formed around the periphery of theneedle-cylinder, in which the needles bl are placed. The needles arebent at right angles, so as to present butts b2 to the-action of thecams, and are provided with pivoted latches b3.

A cam-cylinder, C, rotates around the needle-cylinder, being maintainedin proper vertical position by guides C1, which are secured to the bedA, and enter a horizontal groove, c, in the periphery of thecam-cylinder. Ihe cam-cylinder receives its motion from a bevel-wheel,H, mounted in bearings on the lower part of the bed A, rotated by acrank,

I, and gearing with teeth C2, cut upon the v/ lower portion of thecam-cylinder. f'

The butts b2 of the needles rest upon the top of the cam-cylinder, andwhen they are struck by the cams the needles are elevated and depressedin proper manner for forming the stitches.

An angular stock, D, having its upper edges inclined at a suitable anglefor the reception of the cams which actuate the needles, is secured uponthe upper portion of the periphery ofthe cam-cylinder C by a screw, orin other convenient manner, justin advance of a curved recess ordepression, C3, which is made in the top of the same.

F represents the elevating-cam, which is sen cured upon the upperleading surface of the stock D, and E, the depressing-cam,-secured uponits upper rear surface. This camis held in position by the screw e,passing through a slot, e', by which means it can be raised or loweredupon the casting D, to more or less lengthen or shorten the stitch, asdesired, for various kinds of work.

Gr represents the yarn-feeder, which is secured upon the outside of thestock D at its leading edge, being bent inward above the cams, andprovided with a hole, g, near its top, through which yarn is supplied tothe needles.

The cam-cylinder C being putin revolution by means of the crank I andbevel-wheel H, the inclined elevating-cam F strikes the butts b2 of theneedles, and raises them in proper manner for foi-min g the stitch, yarnbeing sn`p plied to the needles through the hole g in the yarn-feeder G.

When the needles have been passed by the cam F, and consequentlyelevated to its top, their butts b2 are struck in succession by thelower surface of the cam E, and depressed into the recess C2 a sucientdistance to form the desired length of stitch, the rise in the surfaceelevating them from said recess, and thus relieving the strain on theyarn and fabric.

My improvement adapts the cams E and F and yarn-feed G to be morereadily gotten at for adjustment, &c., by the removal of the 2. Theyarn-feeder G, elevating-cam F, and stock D with said parts attachedthereto. It slotted depressing-cam E, secured to the stock also greatlyfacilitates the building of the ma- D, substantially as and for thepurpose deehine. scribed.

Having thus fully described my invention, what I claim asvnew therein,and desire to se- DANIEL KlDDER. cure by Letters Patent, is-

l. The detachable stock D, adapted and \Vitnesses: employed for thereception of the cams and WALTER AIKEN, yarn-feeder, substantially asset forth. PARKER C. HANCOCK.

